docs(content): add note about multiple ionContents Closes https://github.com/driftyco/ionic-site/issues/956
docs(content): add note about multiple ionContents
Closes https://github.com/driftyco/ionic-site/issues/956

TillaTheHun0/ionic,joshesp/ionic,driftyco/ionic,driftyco/ionic,alan-agius4/ionic,joshesp/ionic,joshesp/ionic,alan-agius4/ionic,alan-agius4/ionic,alan-agius4/ionic,driftyco/ionic,TillaTheHun0/ionic,alan-agius4/ionic,TillaTheHun0/ionic,driftyco/ionic,alan-agius4/ionic,TillaTheHun0/ionic,driftyco/ionic,joshesp/ionic